How do you stop a dog from nibbling?

[AtYourCervix]

2 patches of nibbledness. 1 on tail, 1 on hip.

Think it started off with all over itchyness. Been to vet. Could be allergy, grass, food, something else. Doesn't help that he is moulting like a moulting thing.

Anyway. He seems less itchy after a change in food and a few baths with expensive shampoo but these 2 patches he keeps nibbling at.

Anything I can put on them? Tea tree oil? Would the taste put him off a bit? It's spoiling his exceptional beauty!

It sounds a bit odd but my friend's dog was chewing her paws horribly as they itch from a grass allergy. Once checked over at the vet to ensure no infection, she has been using chamomile tea.

Brew a couple of bags in a mug, allow to cool then put in a spray bottle to spray into the itchy area. I was sceptical but it has really worked for her!